<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>h1</title>
  <style>
    div {
      font-size: 48px;
    }
  </style>

  <!-- css文件引入 -->
  <link rel="stylesheet" href="css/h1.css">

</head>

<body>

  复习页面一
  <hr>
  <div class="abc" style="color: red;">style属性控制css样式</div>
  

</body>

</html>